About 10 years ago, I used to do a bunch of work at the (3) Chrysler Transmission plants in Kokomo IN and one of the plants had several of the A-B CNCs on large machines. Anyone that was trained to maintain them had long since retired and A-B couldn't provide support either. Last I looked there was someone on the east coast repairing them.
I feigned ignorance even though I had installed several in the early 80s. Probably could have made a career right there keeping those machines running.
And charged a very high rate to do so.